Drive ring



March 18, 1930. I 51-, JOHN I 1,750,694

DRIVE RING Filed Dec. 24, 1925 IN VEN TOR A TTORNE Y Patented Mar. 18,1930 UNITED STATES PATENT OFFICE EVERETT ST. JOHN, OF BROOKLYN, NE'WYORK, ASSIGNOR TO AMERICAN TELEPHONE AND TELEGRAPH COMPANY, ACORPORATION OF NEW YORK DRIVE RING Application filed December 24, 1925.Serial Ito-77,642.

This invention relates to drive rings, and more particularly to devicesof this character which can be readily driven into a supporting wallwithout damage to the rings during the driving operation.

The invention further relates to certain improvements in constructionwhich will be apparent from the following description, when consideredin connection with the accompanying drawing, in which one embodimentthereof is illustrated.

Referring to the drawing, Figure 1 is a front elevation of the ring;Fig. 2 is a side elevation of Fig. 1; and Fig. 3 is a top plan view ofthe improved device.

The improved ring may be composed of a single piece of filamentarymaterial, such, for example, as a piece of wire. It is not necessarythat the material be uniform in cross-section, the essential thing beingthat it be of sufiicient strength for driving and of such shape and sizethat it can be readily bent in the desired form. If a piece of wire isused, it is properly galvanized and a shank 5 of the ring terminates ina point 6 which may be driven into the supporting wall in the samemanner as a nail. The upper portion of the ring is bent so that itextends at substantially right angles from the shank 5 to provide ahorizontal portion as indicated by the numeral 7 The portion 7 has aspiral ring 8 extending upwardly therefrom, which is turned back in areverse direction to the portion 7. The spiral ring may be offset fromthe shank 5 in such manner that wires may be introduced therein betweenits end 9 and the portion 7. The spiral ring and its end should be freefrom sharp points so that,

when wires are placed therein, their covering will not be injured.

At the juncture of the horizontal portion 7 and shank 5, the drive ringis bent to form a substantially circular loop 10, which extendsoutwardly and upwardly therefrom. The axis of the rounded loop liessubstantially in the vertical plane of the shank 5, and sufficient spaceis provided to permit hammer blows to be dealt on the top of such loopto drive the ring into a supporting surface without interfering with thespiral portion 8. As

the shank is in a direct line with the portion of the loop upon whichtheblows are struck, a direct drive will be transmitted to the shank andcause its point to enter the surface to which it is to be aflixedwithout bending, cracking or otherwise injuring any portion of the drivering.

As there are no sharp bends or difficult operations involved in themanufacture of the improved drive ring, it is Very inexpensive toproduce and the waste by cracking or breaking during its manufacture isnegligible.

The portion of the loop 10 upon which the hammer blows are delivered inthe driving of the ring is in direct vertical alinement with the shank 5and its point 6, so that it may be driven without buckling in the samemanner as a nail. Thus the provision of said loop as describedfacilitates the driving. When the ring is fully driven into the wall,the lower portion or shoulder of the circular loop 10 which extendsoutwardly from the shank 5, becomes embedded in the surface of the walland prevents rotation of the ring.

While there is shown and described herein one preferred form of theinvention by way of illustration, it is understood that it is notlimited or confined to the precise details of construction hereindescribed and delineated, as modification and variation may be madewithin the scope of the claim without departing from the spirit of theinvention.

What is claimed is:

A drive ring comprising a piece of wire material of which one end formsa shank portion, said material being bent at substantially right anglesat the upper end of the shank to form a horizontal portion of which theend is bent to form an open ring, said open ring extending upwardly fromthe horizontal portion and in offset relation to the plane thereof, thewire being also bent at the juncture of the shank and horizontal portionto form a substantially semi-circular loop portion of uniformcross-section extending outwardly and upwardly from the shank andhorizontal portions, the curved uppermost portion of said loop forming astriking surface positioned in alinement with the axis of the shank andelevated above said horizontal portion so that hammer blows may beapplied thereto to transmit a direct driving force to said shank withoutstriking said horizontal portion, and said ring being s aeed 5sufficiently far to one side of the axis 0 said shank .to allow.clearance for the hammer and permit of striking the upper surface ofsaid loop portion without hitting said ring, the outwardly extendingportion of said'loop also forming a shoulder :to enter the surface of asupporting iva l l 31nd interlock therewith to preventthe rotation ofthe drive ring when it is positioned.

In testimony whereof, vI have signed my name to this specification this23rd day of Deoember,-.1925. v g V EVERETT ST. JOHN.

